I had to read soooooo many forums when I was trying to see if I could do this, I finally found a page that kinda explained it but was a struggle lol wish I had this video about 5 months ago lol good vid man. Keep them coming.
Really helpful video. In the confusing situation of having a 318ti with a medium case diff but wanting to put a small case welded back in. Right mess to figure out because the previous owner is no help so cheers for this ahaha
This swap was done on my car by the previous owner and he had hacked up the 188 flanges to make the circlip groove line up and had no axle spacers so on the first day of having the car the left output shaft just fucking snapped. I replaced both output shafts with untouched ones, used axle spacers and it's been fine without modifying the output shafts in any way, but my diff is an lsd so it might be different. I think the stubs do stick out a tiny bit compared to oem but honestly I know the splines are in all the way, the surface for the seal is also far enough in there, so there's no actual reason for it to go deeper, if anything it helps with the axle length difference, and since the 168 and 188 circlip grooves don't line up anyways pushing it in more isn't gonna secure more either. It also hasn't made any noise so I think that center bar we see in your open diff must be different in an lsd. The spacers are definitely needed tho, because otherwise you can tell it's too short and overextending the axles, plus since I didn't weld the stubs in it would pull on them and make them pop out a little bit, here since the axles are compressed they push them the stubs into the diff.
I am going to this swap from 2.91 to 3.45 diff, but not welded and only using STTrackpart axle spacer 6mm is it enough? Not welding it due to install of racingdiffs lsd conversion
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I had to read soooooo many forums when I was trying to see if I could do this, I finally found a page that kinda explained it but was a struggle lol wish I had this video about 5 months ago lol good vid man. Keep them coming.
Haha me too! Thanks man! I will do 👌🏼
You really saved me a lot of trouble and money, I had a hard time figuring out how to get a 3.38 diff in my 328i. Thx you!
No worries dude!🤘🏼
Really helpful video. In the confusing situation of having a 318ti with a medium case diff but wanting to put a small case welded back in. Right mess to figure out because the previous owner is no help so cheers for this ahaha
Thanks 👌🏼🤘🏼 ah that sounds like fun haha
This swap was done on my car by the previous owner and he had hacked up the 188 flanges to make the circlip groove line up and had no axle spacers so on the first day of having the car the left output shaft just fucking snapped.
I replaced both output shafts with untouched ones, used axle spacers and it's been fine without modifying the output shafts in any way, but my diff is an lsd so it might be different. I think the stubs do stick out a tiny bit compared to oem but honestly I know the splines are in all the way, the surface for the seal is also far enough in there, so there's no actual reason for it to go deeper, if anything it helps with the axle length difference, and since the 168 and 188 circlip grooves don't line up anyways pushing it in more isn't gonna secure more either. It also hasn't made any noise so I think that center bar we see in your open diff must be different in an lsd.
The spacers are definitely needed tho, because otherwise you can tell it's too short and overextending the axles, plus since I didn't weld the stubs in it would pull on them and make them pop out a little bit, here since the axles are compressed they push them the stubs into the diff.
Welded diff in the rain is asking for trouble😬
Haha na it’s fine, just don’t clutch kick round a corner haha
Awesome video dude, I will definitely swap the flanges to use the bigger axles
Thanks man! 🤘🏼 yeah it’s definitely worth doing!
Has anyone done a small to medium case swap on a e36 318i? Or have any tips or parts list needed for the install. Any info helps.
You will need the rear half of prop shaft, diff and driveshafts from a 323 or 328 👌🏼
My car came factory with a 3.91 and I want to swap to a 2.93 will me axels be too long?
Should fit fine as they are both medium case
Wait so why would you switch to a 3.18 diff , is it stronger ?, btw great video !
It’s actually weaker, but you get the better ratio (3.38) for more acceleration 👌🏼 seems to be holding up ok for now tho hah thanks ☺️🤘🏼
Sooo freshhhh 👌
It’s getting there haha 👌🏼🤘🏻
Could I have the link to the spaces for the ears to the drive shafts 🤞
Www.6shopuk.com
Would it be possible the opposite way. Small case(318is) conversation to med case diff
Yeah but you would need to change driveshafts and rear propshaft
I am going to this swap from 2.91 to 3.45 diff, but not welded and only using STTrackpart axle spacer 6mm is it enough? Not welding it due to install of racingdiffs lsd conversion
I would recommend 10mm spacer as that is the size difference
I have e46 325i, can i use e36 diff since in my country there is no manual e46?
Thanks in advance 🙏
Hi, no, they are different casing from e46 to e36, you will have to try find a diff in another country :/
does this work on e46 too? nice video.
Yes I think it is the same procedure, thanks ☺️👌🏼
What driveshafts are those!? Thick boys! Iv got a 318 small case welded but snapping driveshafts like no tomorrow
They are stock ones from a 323i, they are the strongest ones without going m3 stuff 👌🏼
Swap Turkey 3.45 3.35
How can i now the type of diff?
like 2.93 where can i find the number of it
It should say it on a lil metal tag on the back or a sticker on the top
What if i want use small case cap in medium case diff? Cani do it? Any advice, thank you
I’m not sure, would be better to just change your shafts to medium case shafts as they are stronger than small case shafts.
So 3.38 ratios swap ?
I have a Kardan from 328i is it ok for 3,38 Diff ?
What is a kardan? Haha
Wait… but what about the front diff bolt. How does that work with the small case in the subframe made for the medium case??
The mounting points and subframe are identical, fits right in 👌🏼
How did the diff hold up?
Held up good, never broke a shaft or anything for 2 years, then upgraded to m3 rear end
@@MaxFullerthanks man, how did you find the gear ratio for daily use?
Was fine, 70mph = 3.5k rpm
@@MaxFuller cheers dude
Is it ok go without weld?
I have never done it without welding it, it should be ok if you use the spacers, if you don’t use the spacers they will pop out
Ok.. thanks for ur response
Btw.. how much the spacer thickness?
No worries, the spacer is 10mm thick, the bolts are longer too
hi there, thank you for your great video, do you think it's be ok to replace 3.15 to 3.91?
Thanks man🤘🏼 yeah they are both medium case diffs so you won’t have to change anything